I am looking for advice on how to test the green coax wire coming from
the O2 sensor.  In the archives there is discussion about this wire
and the possibility of an internal short that causes the ECU to get
upset, run the engine rich and cause poor idling.  However, the
archives were not very clear on a test procedure for this shorting
situation.

Another question...the O2 sensor voltage is definitely produced by the
sensor - correct?  Not the ECU.  The ECU picks up this voltage and
looks for a nice consistent flip-flop between .45 and .55 volts -
correct?

Thanks.

Laurence Smith
Hamilton, ON
90 Westy (fanumbos)